class Point
{
public:
    int x;
    int y;
};

class Line
{
public:
    Point start;
    Point end;

    Line(const Point &start, const Point &end)
    {
        this->start = start;
        this->end = end;
    }
};

class Rect
{
public:
    Point leftUp;
    int width;
    int height;

    Rect(const Point &leftUp, int width, int height)
    {
        this->leftUp = leftUp;
        this->width = width;
        this->height = height;
    }
};

//增加
class Circle
{
};
